Packing



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No. 751,884. Y PATBNTBD PEB. 9, 1904:.4 W. J. M. WEAVER.

v PACKING.

APPLIGATIQN FILED JULY 27. 1903,

N0 MODEL.

UNITED. STATES Patented February 9, 1904.

'PATENT OFFICE.

PACKING.

SPECIFICATION forming part of LettersPate'nt No. 751,884, dated February 9, 1304.

Application filed Tilly Z7, 1903.

To all whom it may con/cera.-

a rod or plunger passing through said box,

the object of the invention being to provide a packing of such construction that the lubricant contained in it shall be delivered under operating conditions to the surface of the rod or plunger, so as to prevent undue friction between it and the packing.

A further object of the invention is t'o provide means for the retention of the lubricant, so that this shall be delivered from time to time to the moving surface of the rod 0r plunger in a manner such as to most eiiciently perform its function.

These objects I attain as hereinafter set forth, reference being had to the accompanying drawings, in which- Figure 1 is a perspective view of a section of packing constructed in accordance with my invention, showing the preferred arrangement of the container or reservoir for lubricant. Fig. 2 is a vertical sectional view of a piece of packing constructed the same as that shown in Fig. 1, but without the perforations. in the containing-section for the lubricant. Fig. 3 is a sectional elevation of another form of my improved packing in which the containing-section for lubricant has the form of a section of a cylinder. Fig. A is a sectional elevation of a piece of packing, showing the containing-piece for the lubricant extendedk between the wedges as well as between the cushion and the wedges.

Fig. 5 is a sectional elevation of a special form of my improved packing, showing the lubricant-container of a curved or bent section and extending into the body of the cushion. Fig. 6 is a form of my improved packing in which the container for the lubricant is'in the'form of a tube extend-l ing longitudinally of the packing andkprovided with perforations, said tube beingk `forms of packing. formed of a number of parallel layers of Serial No. 167,222. (No model.)

placed between the cushion and the wedges; and Fig. 7 is asectional elevation of a form of my improved packing in which the container for lubricant is given the form of a corrugated strip extending through `the packing, the lubricant being contained between the corrugations of said strip.

In the above drawings the figures represent the various forms of packing, in each case including two wedge-sections A and A' and a cushion-section B, these being elements well known to the art and common to many The wedges are usually fabric and have between them some device or compound to promote their sliding upon one another and which prevents their sticking together, such as graphite or a sheet 'of material b2, of metal or other hard substance.

The cushion-section B usually consists of hemp or cotton either twisted into a number of strands, as shown at t in Fig. l, or laid in any other desired manner. Between the cushion-section and the wedge-section I place some' form of container or reservoir in which is held a body of lubricantdsuch, for example, as tallow and grease or graphite.

In Fig. 1 my container consists cfa Z-shaped piece ofsoft metal C, extending longitudinally through the packing and lying between the top surface of one of the wedges and the cushion B. In the wedge-shaped space formed by 'the folds of this piece C the graphite and grease 4or other lubricant is placed, and I preferably perfor-ate the central fold of the piece C, so that said lubricant may easily pass from one to the other of the wedge-shaped spaces.

As customary in the type of packing illus- `trated, the wedges, cushion, and lubricantcontainer are all held in place by a covering or jacket of fabric, as shown at D.

As illustrated in Figs. 3 and 6, the lubricant may be contained in a tube of such material as lead or soft metal having perforations in its sides, and, as before, placed between the cushion and the wedges.

In the forms shown in Figs. i and 5 the'lubricant is contained between two substantially parallel sheets of metal, rubber, &c. so placed between the wedges and cushions as to be free to be pressed out' at the sides of the packing when pressure is applied to the saine under working conditions.

In the case of the packing illustrated in Fig. 5 the sheets between which the lubricant is held are bent or curved upwardly, so as to retain in a given width a greater body of lubricant than if the sheets extended across the top of the wedge without such curving.

In Fig. 4 in addition to extending across between the top of one of the wedges and the cushions the reservoir for the lubricant is extended down between the wedges, being open at both ends, so that underpressure the lubricant is caused to exude at two points on one side of the packing.

, In Fig. 7 a single sheet of metal, rubber, &c.', is corrugated and provided with lubricant, which is held between its corrugations, said lubricant, as before, feeding out on either side of the packing when pressure is applied.

In any case it will be noted that the sheet forming the sides of the container for lubricant a're of a width relatively greater than the width of the packing in which they are employed.,

I claim as my invention- 1.1 In a packing, the combination of a plurality of bodies of material extending longitudinally of the same, certain of said bodies being composed of sheets of fabric and another body consisting `of a relatively loose fibrous material, with a containing device extending between the said bodies of material, and lubricant in said containing device, substantially as described.

2. `The combination of a packing including wedges andl a cushion, with a container forlubricant extending longitudinally of the packing between the cushion and said wedges, and a'body of lubricating material held by said container, substantially as described.

The combination in a packing, of wedges and' a cushion, with a containing device eX- t'ending longitudinally of the packing and placed between the cushion and the top surface of one of the wedges, and a body of lubricating material held by the containing device, said device having an opening for pervn'iitting said lubricating material to pass out lat' the side of the packing substantially as described.

4. The combination in a packing, of acushion, and a pair of wedges, with a containing device extending between the cushion and the wedges and between the wedges, and a body of lubricating material held by said containing device, substantially as described.

`- 5. rIhe combination in a packing, including 4a cushion and two substantially wedge-shaped sections, of a receptacle consisting of substantially parallel sheets of material having between them a body of lubricant and placed between the cushions and the wedge-shaped sections, substantially as described.

6. The combination in a packing, of a cushion, with a body of relatively solid material containing fabric, extending parallel to the body of the cushion, a receptacle consisting of substantially parallel sheets of material placed between the cushion and said body of fabric-containing material, and a lubricant between said sheets'of material, said receptacle being constructed so that the said lubricant is free to pass out of it at the side of the packing, substantially as specified.

7. The combination in apacking, of a cushion, and two substantially wedge-shaped sections, with a plurality of sheets of material extending substantially parallel to each other between the wedge-sliaped sections, and between one of the sections and the cushion, with a body of lubricating material contained between said sheets, substantially as described.

8. The combination in a packing, of a cushion-section, and a pair of wedge-shaped sections, with a body of lubricant between said wedge-sections and the cushion, and a container for said lubricant, said container having openings in its sides, substantially as described.

9. The combination in a packing, of a cushion, a relatively solid body of material containing fabric, and a plurality of sheets of material between said body and the cushion, said sheets being some distance apart and containing between them a body of lubricating material, the sheets being of a width greater than the width of the packing, substantially as described.

l0. The combination in apacking, of acushion, and a pair of wedge-shaped sections, with a sheet of lead between the cushion and the wedge-sections, said sheet being bent to form a receptacle and a body of lubricating material contained in said receptacle, substantially as specified.

11. The combination of a cushion-section with two wedge-sections and a piece of material between said, cushion-section and the wedge-sections, said piece of material being folded upon itself in such manner as to foi-in a receptacle, and a body of lubricating material held in said receptacle, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM J. M. WEAVER.

Witnesses:

WILLIAM F. BEAToN, WILLIAM E. BRADLEY,

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